Commit | Line | Data |
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988174c1 | 1 | char rcsid[] = "$RCSfile: perl.c,v $$Revision: 4.0.1.6 $$Date: 91/11/11 16:38:45 $\nPatch level: ###\n"; |
8d063cd8 | 2 | /* |
352d5a3a | 3 | * Copyright (c) 1991, Larry Wall |
a687059c | 4 | * |
352d5a3a LW |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. | |
a687059c | 7 | * |
fe14fcc3 | 8 | * $Log: perl.c,v $ |
988174c1 LW |
9 | * Revision 4.0.1.6 91/11/11 16:38:45 lwall |
10 | * patch19: default arg for shift was wrong after first subroutine definition | |
11 | * patch19: op/regexp.t failed from missing arg to bcmp() | |
12 | * | |
45d8adaa LW |
13 | * Revision 4.0.1.5 91/11/05 18:03:32 lwall |
14 | * patch11: random cleanup | |
15 | * patch11: $0 was being truncated at times | |
16 | * patch11: cppstdin now installed outside of source directory | |
17 | * patch11: -P didn't allow use of #elif or #undef | |
18 | * patch11: prepared for ctype implementations that don't define isascii() | |
19 | * patch11: added eval {} | |
20 | * patch11: eval confused by string containing null | |
21 | * | |
1462b684 LW |
22 | * Revision 4.0.1.4 91/06/10 01:23:07 lwall |
23 | * patch10: perl -v printed incorrect copyright notice | |
24 | * | |
352d5a3a LW |
25 | * Revision 4.0.1.3 91/06/07 11:40:18 lwall |
26 | * patch4: changed old $^P to $^X | |
27 | * | |
28 | * Revision 4.0.1.2 91/06/07 11:26:16 lwall | |
29 | * patch4: new copyright notice | |
30 | * patch4: added $^P variable to control calling of perldb routines | |
31 | * patch4: added $^F variable to specify maximum system fd, default 2 | |
32 | * patch4: debugger lost track of lines in eval | |
33 | * | |
35c8bce7 LW |
34 | * Revision 4.0.1.1 91/04/11 17:49:05 lwall |
35 | * patch1: fixed undefined environ problem | |
36 | * | |
fe14fcc3 LW |
37 | * Revision 4.0 91/03/20 01:37:44 lwall |
38 | * 4.0 baseline. | |
8d063cd8 LW |
39 | * |
40 | */ | |
41 | ||
45d8adaa LW |
42 | /*SUPPRESS 560*/ |
43 | ||
378cc40b LW |
44 | #include "EXTERN.h" |
45 | #include "perl.h" | |
46 | #include "perly.h" | |
20188a90 LW |
47 | #ifdef MSDOS |
48 | #include "patchlev.h" | |
49 | #else | |
a687059c | 50 | #include "patchlevel.h" |
20188a90 | 51 | #endif |
378cc40b | 52 | |
352d5a3a LW |
53 | char *getenv(); |
54 | ||
a687059c LW |
55 | #ifdef IAMSUID |
56 | #ifndef DOSUID | |
57 | #define DOSUID | |
58 | #endif | |
59 | #endif | |
378cc40b | 60 | |
a687059c LW |
61 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
62 | #ifdef DOSUID | |
63 | #undef DOSUID | |
64 | #endif | |
65 | #endif | |
8d063cd8 | 66 | |
33b78306 LW |
67 | static char* moreswitches(); |
68 | static char* cddir; | |
33b78306 | 69 | static bool minus_c; |
27e2fb84 | 70 | static char patchlevel[6]; |
fe14fcc3 LW |
71 | static char *nrs = "\n"; |
72 | static int nrschar = '\n'; /* final char of rs, or 0777 if none */ | |
73 | static int nrslen = 1; | |
33b78306 | 74 | |
8d063cd8 LW |
75 | main(argc,argv,env) |
76 | register int argc; | |
77 | register char **argv; | |
78 | register char **env; | |
79 | { | |
80 | register STR *str; | |
81 | register char *s; | |
45d8adaa | 82 | char *scriptname; |
352d5a3a | 83 | char *getenv(); |
378cc40b | 84 | bool dosearch = FALSE; |
a687059c | 85 | #ifdef DOSUID |
13281fa4 LW |
86 | char *validarg = ""; |
87 | #endif | |
8d063cd8 | 88 | |
a687059c LW |
89 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
90 | #ifdef IAMSUID | |
91 | #undef IAMSUID | |
92 | fatal("suidperl is no longer needed since the kernel can now execute\n\ | |
93 | setuid perl scripts securely.\n"); | |
94 | #endif | |
95 | #endif | |
96 | ||
ac58e20f LW |
97 | origargv = argv; |
98 | origargc = argc; | |
fe14fcc3 | 99 | origenviron = environ; |
378cc40b LW |
100 | uid = (int)getuid(); |
101 | euid = (int)geteuid(); | |
a687059c LW |
102 | gid = (int)getgid(); |
103 | egid = (int)getegid(); | |
fe14fcc3 | 104 | sprintf(patchlevel,"%3.3s%2.2d", index(rcsid,'4'), PATCHLEVEL); |
0f85fab0 LW |
105 | #ifdef MSDOS |
106 | /* | |
107 | * There is no way we can refer to them from Perl so close them to save | |
108 | * space. The other alternative would be to provide STDAUX and STDPRN | |
109 | * filehandles. | |
110 | */ | |
111 | (void)fclose(stdaux); | |
112 | (void)fclose(stdprn); | |
113 | #endif | |
a687059c | 114 | if (do_undump) { |
33b78306 | 115 | origfilename = savestr(argv[0]); |
a687059c | 116 | do_undump = 0; |
ac58e20f | 117 | loop_ptr = -1; /* start label stack again */ |
a687059c LW |
118 | goto just_doit; |
119 | } | |
120 | (void)sprintf(index(rcsid,'#'), "%d\n", PATCHLEVEL); | |
121 | linestr = Str_new(65,80); | |
378cc40b | 122 | str_nset(linestr,"",0); |
a687059c LW |
123 | str = str_make("",0); /* first used for -I flags */ |
124 | curstash = defstash = hnew(0); | |
125 | curstname = str_make("main",4); | |
126 | stab_xhash(stabent("_main",TRUE)) = defstash; | |
20188a90 | 127 | defstash->tbl_name = "main"; |
33b78306 | 128 | incstab = hadd(aadd(stabent("INC",TRUE))); |
a687059c | 129 | incstab->str_pok |= SP_MULTI; |
33b78306 | 130 | for (argc--,argv++; argc > 0; argc--,argv++) { |
8d063cd8 LW |
131 | if (argv[0][0] != '-' || !argv[0][1]) |
132 | break; | |
13281fa4 LW |
133 | #ifdef DOSUID |
134 | if (*validarg) | |
135 | validarg = " PHOOEY "; | |
136 | else | |
137 | validarg = argv[0]; | |
138 | #endif | |
139 | s = argv[0]+1; | |
8d063cd8 | 140 | reswitch: |
13281fa4 | 141 | switch (*s) { |
27e2fb84 | 142 | case '0': |
378cc40b | 143 | case 'a': |
33b78306 | 144 | case 'c': |
a687059c | 145 | case 'd': |
8d063cd8 | 146 | case 'D': |
33b78306 | 147 | case 'i': |
fe14fcc3 | 148 | case 'l': |
33b78306 LW |
149 | case 'n': |
150 | case 'p': | |
151 | case 'u': | |
152 | case 'U': | |
153 | case 'v': | |
154 | case 'w': | |
155 | if (s = moreswitches(s)) | |
156 | goto reswitch; | |
8d063cd8 | 157 | break; |
33b78306 | 158 | |
8d063cd8 | 159 | case 'e': |
a687059c LW |
160 | #ifdef TAINT |
161 | if (euid != uid || egid != gid) | |
162 | fatal("No -e allowed in setuid scripts"); | |
163 | #endif | |
8d063cd8 | 164 | if (!e_fp) { |
a687059c LW |
165 | e_tmpname = savestr(TMPPATH); |
166 | (void)mktemp(e_tmpname); | |
8d063cd8 | 167 | e_fp = fopen(e_tmpname,"w"); |
33b78306 LW |
168 | if (!e_fp) |
169 | fatal("Cannot open temporary file"); | |
8d063cd8 | 170 | } |
33b78306 | 171 | if (argv[1]) { |
8d063cd8 | 172 | fputs(argv[1],e_fp); |
33b78306 LW |
173 | argc--,argv++; |
174 | } | |
a687059c | 175 | (void)putc('\n', e_fp); |
8d063cd8 LW |
176 | break; |
177 | case 'I': | |
a687059c LW |
178 | #ifdef TAINT |
179 | if (euid != uid || egid != gid) | |
180 | fatal("No -I allowed in setuid scripts"); | |
181 | #endif | |
13281fa4 LW |
182 | str_cat(str,"-"); |
183 | str_cat(str,s); | |
8d063cd8 | 184 | str_cat(str," "); |
a687059c LW |
185 | if (*++s) { |
186 | (void)apush(stab_array(incstab),str_make(s,0)); | |
378cc40b | 187 | } |
33b78306 | 188 | else if (argv[1]) { |
a687059c | 189 | (void)apush(stab_array(incstab),str_make(argv[1],0)); |
8d063cd8 LW |
190 | str_cat(str,argv[1]); |
191 | argc--,argv++; | |
192 | str_cat(str," "); | |
193 | } | |
194 | break; | |
8d063cd8 | 195 | case 'P': |
a687059c LW |
196 | #ifdef TAINT |
197 | if (euid != uid || egid != gid) | |
198 | fatal("No -P allowed in setuid scripts"); | |
199 | #endif | |
8d063cd8 | 200 | preprocess = TRUE; |
13281fa4 | 201 | s++; |
8d063cd8 LW |
202 | goto reswitch; |
203 | case 's': | |
a687059c LW |
204 | #ifdef TAINT |
205 | if (euid != uid || egid != gid) | |
206 | fatal("No -s allowed in setuid scripts"); | |
207 | #endif | |
8d063cd8 | 208 | doswitches = TRUE; |
13281fa4 | 209 | s++; |
8d063cd8 | 210 | goto reswitch; |
378cc40b | 211 | case 'S': |
45d8adaa LW |
212 | #ifdef TAINT |
213 | if (euid != uid || egid != gid) | |
214 | fatal("No -S allowed in setuid scripts"); | |
215 | #endif | |
378cc40b | 216 | dosearch = TRUE; |
13281fa4 | 217 | s++; |
378cc40b | 218 | goto reswitch; |
33b78306 LW |
219 | case 'x': |
220 | doextract = TRUE; | |
13281fa4 | 221 | s++; |
33b78306 LW |
222 | if (*s) |
223 | cddir = savestr(s); | |
224 | break; | |
8d063cd8 LW |
225 | case '-': |
226 | argc--,argv++; | |
227 | goto switch_end; | |
228 | case 0: | |
229 | break; | |
230 | default: | |
13281fa4 | 231 | fatal("Unrecognized switch: -%s",s); |
8d063cd8 LW |
232 | } |
233 | } | |
234 | switch_end: | |
45d8adaa | 235 | scriptname = argv[0]; |
8d063cd8 | 236 | if (e_fp) { |
a687059c | 237 | (void)fclose(e_fp); |
8d063cd8 | 238 | argc++,argv--; |
45d8adaa | 239 | scriptname = e_tmpname; |
8d063cd8 | 240 | } |
fe14fcc3 LW |
241 | |
242 | #ifdef MSDOS | |
243 | #define PERLLIB_SEP ';' | |
244 | #else | |
245 | #define PERLLIB_SEP ':' | |
246 | #endif | |
247 | #ifndef TAINT /* Can't allow arbitrary PERLLIB in setuid script */ | |
248 | { | |
249 | char * s2 = getenv("PERLLIB"); | |
250 | ||
251 | if ( s2 ) { | |
252 | /* Break at all separators */ | |
253 | while ( *s2 ) { | |
254 | /* First, skip any consecutive separators */ | |
255 | while ( *s2 == PERLLIB_SEP ) { | |
256 | /* Uncomment the next line for PATH semantics */ | |
257 | /* (void)apush(stab_array(incstab),str_make(".",1)); */ | |
258 | s2++; | |
259 | } | |
260 | if ( (s = index(s2,PERLLIB_SEP)) != Nullch ) { | |
261 | (void)apush(stab_array(incstab),str_make(s2,(int)(s-s2))); | |
262 | s2 = s+1; | |
263 | } else { | |
264 | (void)apush(stab_array(incstab),str_make(s2,0)); | |
265 | break; | |
266 | } | |
267 | } | |
268 | } | |
269 | } | |
270 | #endif /* TAINT */ | |
271 | ||
378cc40b LW |
272 | #ifndef PRIVLIB |
273 | #define PRIVLIB "/usr/local/lib/perl" | |
274 | #endif | |
a687059c | 275 | (void)apush(stab_array(incstab),str_make(PRIVLIB,0)); |
33b78306 | 276 | (void)apush(stab_array(incstab),str_make(".",1)); |
8d063cd8 LW |
277 | |
278 | str_set(&str_no,No); | |
279 | str_set(&str_yes,Yes); | |
8d063cd8 LW |
280 | |
281 | /* open script */ | |
282 | ||
45d8adaa | 283 | if (scriptname == Nullch) |
34de22dd LW |
284 | #ifdef MSDOS |
285 | { | |
286 | if ( isatty(fileno(stdin)) ) | |
287 | moreswitches("v"); | |
45d8adaa | 288 | scriptname = "-"; |
34de22dd LW |
289 | } |
290 | #else | |
45d8adaa | 291 | scriptname = "-"; |
34de22dd | 292 | #endif |
45d8adaa | 293 | if (dosearch && !index(scriptname, '/') && (s = getenv("PATH"))) { |
378cc40b | 294 | char *xfound = Nullch, *xfailed = Nullch; |
a687059c | 295 | int len; |
378cc40b | 296 | |
a687059c | 297 | bufend = s + strlen(s); |
378cc40b | 298 | while (*s) { |
33b78306 | 299 | #ifndef MSDOS |
a687059c | 300 | s = cpytill(tokenbuf,s,bufend,':',&len); |
33b78306 LW |
301 | #else |
302 | for (len = 0; *s && *s != ';'; tokenbuf[len++] = *s++); | |
303 | tokenbuf[len] = '\0'; | |
304 | #endif | |
378cc40b LW |
305 | if (*s) |
306 | s++; | |
33b78306 LW |
307 | #ifndef MSDOS |
308 | if (len && tokenbuf[len-1] != '/') | |
309 | #else | |
310 | if (len && tokenbuf[len-1] != '\\') | |
311 | #endif | |
a687059c | 312 | (void)strcat(tokenbuf+len,"/"); |
45d8adaa | 313 | (void)strcat(tokenbuf+len,scriptname); |
378cc40b LW |
314 | #ifdef DEBUGGING |
315 | if (debug & 1) | |
316 | fprintf(stderr,"Looking for %s\n",tokenbuf); | |
317 | #endif | |
318 | if (stat(tokenbuf,&statbuf) < 0) /* not there? */ | |
319 | continue; | |
27e2fb84 LW |
320 | if (S_ISREG(statbuf.st_mode) |
321 | && cando(S_IRUSR,TRUE,&statbuf) && cando(S_IXUSR,TRUE,&statbuf)) { | |
378cc40b LW |
322 | xfound = tokenbuf; /* bingo! */ |
323 | break; | |
324 | } | |
325 | if (!xfailed) | |
326 | xfailed = savestr(tokenbuf); | |
327 | } | |
328 | if (!xfound) | |
45d8adaa | 329 | fatal("Can't execute %s", xfailed ? xfailed : scriptname ); |
378cc40b | 330 | if (xfailed) |
a687059c | 331 | Safefree(xfailed); |
45d8adaa | 332 | scriptname = savestr(xfound); |
378cc40b | 333 | } |
a687059c | 334 | |
20188a90 | 335 | fdpid = anew(Nullstab); /* for remembering popen pids by fd */ |
27e2fb84 | 336 | pidstatus = hnew(COEFFSIZE);/* for remembering status of dead pids */ |
a687059c | 337 | |
45d8adaa | 338 | origfilename = savestr(scriptname); |
20188a90 LW |
339 | curcmd->c_filestab = fstab(origfilename); |
340 | if (strEQ(origfilename,"-")) | |
45d8adaa | 341 | scriptname = ""; |
8d063cd8 | 342 | if (preprocess) { |
45d8adaa LW |
343 | char *cpp = CPPSTDIN; |
344 | ||
345 | if (strEQ(cpp,"cppstdin")) | |
346 | sprintf(tokenbuf, "%s/%s", SCRIPTDIR, cpp); | |
347 | else | |
348 | sprintf(tokenbuf, "%s", cpp); | |
378cc40b LW |
349 | str_cat(str,"-I"); |
350 | str_cat(str,PRIVLIB); | |
a687059c | 351 | (void)sprintf(buf, "\ |
20188a90 | 352 | %ssed %s -e '/^[^#]/b' \ |
8d063cd8 LW |
353 | -e '/^#[ ]*include[ ]/b' \ |
354 | -e '/^#[ ]*define[ ]/b' \ | |
355 | -e '/^#[ ]*if[ ]/b' \ | |
356 | -e '/^#[ ]*ifdef[ ]/b' \ | |
378cc40b | 357 | -e '/^#[ ]*ifndef[ ]/b' \ |
8d063cd8 | 358 | -e '/^#[ ]*else/b' \ |
45d8adaa LW |
359 | -e '/^#[ ]*elif[ ]/b' \ |
360 | -e '/^#[ ]*undef[ ]/b' \ | |
8d063cd8 | 361 | -e '/^#[ ]*endif/b' \ |
45d8adaa | 362 | -e 's/^[ ]*#.*//' \ |
378cc40b | 363 | %s | %s -C %s %s", |
20188a90 LW |
364 | #ifdef MSDOS |
365 | "", | |
366 | #else | |
367 | "/bin/", | |
368 | #endif | |
33b78306 | 369 | (doextract ? "-e '1,/^#/d\n'" : ""), |
45d8adaa | 370 | scriptname, tokenbuf, str_get(str), CPPMINUS); |
34de22dd LW |
371 | #ifdef DEBUGGING |
372 | if (debug & 64) { | |
373 | fputs(buf,stderr); | |
374 | fputs("\n",stderr); | |
375 | } | |
376 | #endif | |
377 | doextract = FALSE; | |
a687059c | 378 | #ifdef IAMSUID /* actually, this is caught earlier */ |
13281fa4 | 379 | if (euid != uid && !euid) /* if running suidperl */ |
fe14fcc3 | 380 | #ifdef HAS_SETEUID |
a687059c LW |
381 | (void)seteuid(uid); /* musn't stay setuid root */ |
382 | #else | |
fe14fcc3 | 383 | #ifdef HAS_SETREUID |
a687059c LW |
384 | (void)setreuid(-1, uid); |
385 | #else | |
386 | setuid(uid); | |
387 | #endif | |
13281fa4 | 388 | #endif |
a687059c LW |
389 | #endif /* IAMSUID */ |
390 | rsfp = mypopen(buf,"r"); | |
8d063cd8 | 391 | } |
45d8adaa LW |
392 | else if (!*scriptname) { |
393 | #ifdef TAINT | |
394 | if (euid != uid || egid != gid) | |
395 | fatal("Can't take set-id script from stdin"); | |
396 | #endif | |
8d063cd8 | 397 | rsfp = stdin; |
45d8adaa | 398 | } |
8d063cd8 | 399 | else |
45d8adaa LW |
400 | rsfp = fopen(scriptname,"r"); |
401 | if ((FILE*)rsfp == Nullfp) { | |
13281fa4 | 402 | #ifdef DOSUID |
a687059c | 403 | #ifndef IAMSUID /* in case script is not readable before setuid */ |
20188a90 | 404 | if (euid && stat(stab_val(curcmd->c_filestab)->str_ptr,&statbuf) >= 0 && |
13281fa4 | 405 | statbuf.st_mode & (S_ISUID|S_ISGID)) { |
27e2fb84 | 406 | (void)sprintf(buf, "%s/sperl%s", BIN, patchlevel); |
a687059c | 407 | execv(buf, origargv); /* try again */ |
13281fa4 LW |
408 | fatal("Can't do setuid\n"); |
409 | } | |
410 | #endif | |
411 | #endif | |
a687059c | 412 | fatal("Can't open perl script \"%s\": %s\n", |
20188a90 | 413 | stab_val(curcmd->c_filestab)->str_ptr, strerror(errno)); |
13281fa4 | 414 | } |
8d063cd8 | 415 | str_free(str); /* free -I directories */ |
fe14fcc3 | 416 | str = Nullstr; |
8d063cd8 | 417 | |
13281fa4 LW |
418 | /* do we need to emulate setuid on scripts? */ |
419 | ||
420 | /* This code is for those BSD systems that have setuid #! scripts disabled | |
421 | * in the kernel because of a security problem. Merely defining DOSUID | |
422 | * in perl will not fix that problem, but if you have disabled setuid | |
423 | * scripts in the kernel, this will attempt to emulate setuid and setgid | |
424 | * on scripts that have those now-otherwise-useless bits set. The setuid | |
27e2fb84 LW |
425 | * root version must be called suidperl or sperlN.NNN. If regular perl |
426 | * discovers that it has opened a setuid script, it calls suidperl with | |
427 | * the same argv that it had. If suidperl finds that the script it has | |
428 | * just opened is NOT setuid root, it sets the effective uid back to the | |
429 | * uid. We don't just make perl setuid root because that loses the | |
430 | * effective uid we had before invoking perl, if it was different from the | |
431 | * uid. | |
13281fa4 LW |
432 | * |
433 | * DOSUID must be defined in both perl and suidperl, and IAMSUID must | |
434 | * be defined in suidperl only. suidperl must be setuid root. The | |
435 | * Configure script will set this up for you if you want it. | |
a687059c LW |
436 | * |
437 | * There is also the possibility of have a script which is running | |
438 | * set-id due to a C wrapper. We want to do the TAINT checks | |
439 | * on these set-id scripts, but don't want to have the overhead of | |
440 | * them in normal perl, and can't use suidperl because it will lose | |
441 | * the effective uid info, so we have an additional non-setuid root | |
27e2fb84 | 442 | * version called taintperl or tperlN.NNN that just does the TAINT checks. |
13281fa4 | 443 | */ |
a687059c | 444 | |
13281fa4 LW |
445 | #ifdef DOSUID |
446 | if (fstat(fileno(rsfp),&statbuf) < 0) /* normal stat is insecure */ | |
20188a90 | 447 | fatal("Can't stat script \"%s\"",origfilename); |
13281fa4 LW |
448 | if (statbuf.st_mode & (S_ISUID|S_ISGID)) { |
449 | int len; | |
450 | ||
a687059c | 451 | #ifdef IAMSUID |
fe14fcc3 | 452 | #ifndef HAS_SETREUID |
a687059c LW |
453 | /* On this access check to make sure the directories are readable, |
454 | * there is actually a small window that the user could use to make | |
455 | * filename point to an accessible directory. So there is a faint | |
456 | * chance that someone could execute a setuid script down in a | |
457 | * non-accessible directory. I don't know what to do about that. | |
458 | * But I don't think it's too important. The manual lies when | |
459 | * it says access() is useful in setuid programs. | |
460 | */ | |
20188a90 | 461 | if (access(stab_val(curcmd->c_filestab)->str_ptr,1)) /*double check*/ |
13281fa4 | 462 | fatal("Permission denied"); |
a687059c LW |
463 | #else |
464 | /* If we can swap euid and uid, then we can determine access rights | |
465 | * with a simple stat of the file, and then compare device and | |
466 | * inode to make sure we did stat() on the same file we opened. | |
467 | * Then we just have to make sure he or she can execute it. | |
468 | */ | |
469 | { | |
470 | struct stat tmpstatbuf; | |
471 | ||
472 | if (setreuid(euid,uid) < 0 || getuid() != euid || geteuid() != uid) | |
473 | fatal("Can't swap uid and euid"); /* really paranoid */ | |
20188a90 LW |
474 | if (stat(stab_val(curcmd->c_filestab)->str_ptr,&tmpstatbuf) < 0) |
475 | fatal("Permission denied"); /* testing full pathname here */ | |
a687059c LW |
476 | if (tmpstatbuf.st_dev != statbuf.st_dev || |
477 | tmpstatbuf.st_ino != statbuf.st_ino) { | |
478 | (void)fclose(rsfp); | |
479 | if (rsfp = mypopen("/bin/mail root","w")) { /* heh, heh */ | |
480 | fprintf(rsfp, | |
481 | "User %d tried to run dev %d ino %d in place of dev %d ino %d!\n\ | |
482 | (Filename of set-id script was %s, uid %d gid %d.)\n\nSincerely,\nperl\n", | |
483 | uid,tmpstatbuf.st_dev, tmpstatbuf.st_ino, | |
484 | statbuf.st_dev, statbuf.st_ino, | |
20188a90 LW |
485 | stab_val(curcmd->c_filestab)->str_ptr, |
486 | statbuf.st_uid, statbuf.st_gid); | |
a687059c LW |
487 | (void)mypclose(rsfp); |
488 | } | |
489 | fatal("Permission denied\n"); | |
490 | } | |
491 | if (setreuid(uid,euid) < 0 || getuid() != uid || geteuid() != euid) | |
492 | fatal("Can't reswap uid and euid"); | |
27e2fb84 | 493 | if (!cando(S_IXUSR,FALSE,&statbuf)) /* can real uid exec? */ |
a687059c LW |
494 | fatal("Permission denied\n"); |
495 | } | |
fe14fcc3 | 496 | #endif /* HAS_SETREUID */ |
a687059c LW |
497 | #endif /* IAMSUID */ |
498 | ||
27e2fb84 | 499 | if (!S_ISREG(statbuf.st_mode)) |
13281fa4 | 500 | fatal("Permission denied"); |
27e2fb84 | 501 | if (statbuf.st_mode & S_IWOTH) |
a687059c | 502 | fatal("Setuid/gid script is writable by world"); |
13281fa4 | 503 | doswitches = FALSE; /* -s is insecure in suid */ |
33b78306 | 504 | curcmd->c_line++; |
13281fa4 LW |
505 | if (fgets(tokenbuf,sizeof tokenbuf, rsfp) == Nullch || |
506 | strnNE(tokenbuf,"#!",2) ) /* required even on Sys V */ | |
507 | fatal("No #! line"); | |
663a0e37 LW |
508 | s = tokenbuf+2; |
509 | if (*s == ' ') s++; | |
45d8adaa | 510 | while (!isSPACE(*s)) s++; |
27e2fb84 | 511 | if (strnNE(s-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */ |
13281fa4 | 512 | fatal("Not a perl script"); |
a687059c | 513 | while (*s == ' ' || *s == '\t') s++; |
13281fa4 LW |
514 | /* |
515 | * #! arg must be what we saw above. They can invoke it by | |
516 | * mentioning suidperl explicitly, but they may not add any strange | |
517 | * arguments beyond what #! says if they do invoke suidperl that way. | |
518 | */ | |
519 | len = strlen(validarg); | |
520 | if (strEQ(validarg," PHOOEY ") || | |
45d8adaa | 521 | strnNE(s,validarg,len) || !isSPACE(s[len])) |
a687059c LW |
522 | fatal("Args must match #! line"); |
523 | ||
524 | #ifndef IAMSUID | |
525 | if (euid != uid && (statbuf.st_mode & S_ISUID) && | |
526 | euid == statbuf.st_uid) | |
527 | if (!do_undump) | |
528 | fatal("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ | |
529 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); | |
530 | #endif /* IAMSUID */ | |
13281fa4 LW |
531 | |
532 | if (euid) { /* oops, we're not the setuid root perl */ | |
a687059c | 533 | (void)fclose(rsfp); |
13281fa4 | 534 | #ifndef IAMSUID |
27e2fb84 | 535 | (void)sprintf(buf, "%s/sperl%s", BIN, patchlevel); |
a687059c | 536 | execv(buf, origargv); /* try again */ |
13281fa4 LW |
537 | #endif |
538 | fatal("Can't do setuid\n"); | |
539 | } | |
540 | ||
ffed7fef | 541 | if (statbuf.st_mode & S_ISGID && statbuf.st_gid != egid) |
fe14fcc3 | 542 | #ifdef HAS_SETEGID |
a687059c LW |
543 | (void)setegid(statbuf.st_gid); |
544 | #else | |
fe14fcc3 | 545 | #ifdef HAS_SETREGID |
a687059c LW |
546 | (void)setregid((GIDTYPE)-1,statbuf.st_gid); |
547 | #else | |
548 | setgid(statbuf.st_gid); | |
549 | #endif | |
550 | #endif | |
551 | if (statbuf.st_mode & S_ISUID) { | |
552 | if (statbuf.st_uid != euid) | |
fe14fcc3 | 553 | #ifdef HAS_SETEUID |
a687059c LW |
554 | (void)seteuid(statbuf.st_uid); /* all that for this */ |
555 | #else | |
fe14fcc3 | 556 | #ifdef HAS_SETREUID |
a687059c LW |
557 | (void)setreuid((UIDTYPE)-1,statbuf.st_uid); |
558 | #else | |
559 | setuid(statbuf.st_uid); | |
560 | #endif | |
561 | #endif | |
562 | } | |
563 | else if (uid) /* oops, mustn't run as root */ | |
fe14fcc3 | 564 | #ifdef HAS_SETEUID |
a687059c LW |
565 | (void)seteuid((UIDTYPE)uid); |
566 | #else | |
fe14fcc3 | 567 | #ifdef HAS_SETREUID |
a687059c LW |
568 | (void)setreuid((UIDTYPE)-1,(UIDTYPE)uid); |
569 | #else | |
570 | setuid((UIDTYPE)uid); | |
571 | #endif | |
572 | #endif | |
ffed7fef | 573 | uid = (int)getuid(); |
13281fa4 | 574 | euid = (int)geteuid(); |
ffed7fef LW |
575 | gid = (int)getgid(); |
576 | egid = (int)getegid(); | |
27e2fb84 | 577 | if (!cando(S_IXUSR,TRUE,&statbuf)) |
13281fa4 LW |
578 | fatal("Permission denied\n"); /* they can't do this */ |
579 | } | |
580 | #ifdef IAMSUID | |
581 | else if (preprocess) | |
582 | fatal("-P not allowed for setuid/setgid script\n"); | |
583 | else | |
584 | fatal("Script is not setuid/setgid in suidperl\n"); | |
a687059c LW |
585 | #else |
586 | #ifndef TAINT /* we aren't taintperl or suidperl */ | |
587 | /* script has a wrapper--can't run suidperl or we lose euid */ | |
588 | else if (euid != uid || egid != gid) { | |
589 | (void)fclose(rsfp); | |
27e2fb84 | 590 | (void)sprintf(buf, "%s/tperl%s", BIN, patchlevel); |
a687059c LW |
591 | execv(buf, origargv); /* try again */ |
592 | fatal("Can't run setuid script with taint checks"); | |
593 | } | |
594 | #endif /* TAINT */ | |
13281fa4 | 595 | #endif /* IAMSUID */ |
a687059c LW |
596 | #else /* !DOSUID */ |
597 | #ifndef TAINT /* we aren't taintperl or suidperl */ | |
598 | if (euid != uid || egid != gid) { /* (suidperl doesn't exist, in fact) */ | |
599 | #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW | |
600 | fstat(fileno(rsfp),&statbuf); /* may be either wrapped or real suid */ | |
601 | if ((euid != uid && euid == statbuf.st_uid && statbuf.st_mode & S_ISUID) | |
602 | || | |
603 | (egid != gid && egid == statbuf.st_gid && statbuf.st_mode & S_ISGID) | |
604 | ) | |
605 | if (!do_undump) | |
606 | fatal("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ | |
607 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); | |
608 | #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */ | |
609 | /* not set-id, must be wrapped */ | |
610 | (void)fclose(rsfp); | |
27e2fb84 | 611 | (void)sprintf(buf, "%s/tperl%s", BIN, patchlevel); |
a687059c LW |
612 | execv(buf, origargv); /* try again */ |
613 | fatal("Can't run setuid script with taint checks"); | |
614 | } | |
615 | #endif /* TAINT */ | |
13281fa4 LW |
616 | #endif /* DOSUID */ |
617 | ||
33b78306 LW |
618 | #if !defined(IAMSUID) && !defined(TAINT) |
619 | ||
620 | /* skip forward in input to the real script? */ | |
621 | ||
622 | while (doextract) { | |
623 | if ((s = str_gets(linestr, rsfp, 0)) == Nullch) | |
624 | fatal("No Perl script found in input\n"); | |
625 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) { | |
626 | ungetc('\n',rsfp); /* to keep line count right */ | |
627 | doextract = FALSE; | |
628 | if (s = instr(s,"perl -")) { | |
629 | s += 6; | |
45d8adaa | 630 | /*SUPPRESS 530*/ |
33b78306 LW |
631 | while (s = moreswitches(s)) ; |
632 | } | |
633 | if (cddir && chdir(cddir) < 0) | |
634 | fatal("Can't chdir to %s",cddir); | |
635 | } | |
636 | } | |
637 | #endif /* !defined(IAMSUID) && !defined(TAINT) */ | |
638 | ||
8d063cd8 LW |
639 | defstab = stabent("_",TRUE); |
640 | ||
988174c1 | 641 | subname = str_make("main",4); |
a687059c LW |
642 | if (perldb) { |
643 | debstash = hnew(0); | |
644 | stab_xhash(stabent("_DB",TRUE)) = debstash; | |
645 | curstash = debstash; | |
20188a90 | 646 | dbargs = stab_xarray(aadd((tmpstab = stabent("args",TRUE)))); |
a687059c | 647 | tmpstab->str_pok |= SP_MULTI; |
20188a90 | 648 | dbargs->ary_flags = 0; |
a687059c LW |
649 | DBstab = stabent("DB",TRUE); |
650 | DBstab->str_pok |= SP_MULTI; | |
20188a90 LW |
651 | DBline = stabent("dbline",TRUE); |
652 | DBline->str_pok |= SP_MULTI; | |
a687059c LW |
653 | DBsub = hadd(tmpstab = stabent("sub",TRUE)); |
654 | tmpstab->str_pok |= SP_MULTI; | |
655 | DBsingle = stab_val((tmpstab = stabent("single",TRUE))); | |
656 | tmpstab->str_pok |= SP_MULTI; | |
20188a90 LW |
657 | DBtrace = stab_val((tmpstab = stabent("trace",TRUE))); |
658 | tmpstab->str_pok |= SP_MULTI; | |
659 | DBsignal = stab_val((tmpstab = stabent("signal",TRUE))); | |
660 | tmpstab->str_pok |= SP_MULTI; | |
a687059c LW |
661 | curstash = defstash; |
662 | } | |
663 | ||
8d063cd8 LW |
664 | /* init tokener */ |
665 | ||
a687059c LW |
666 | bufend = bufptr = str_get(linestr); |
667 | ||
668 | savestack = anew(Nullstab); /* for saving non-local values */ | |
669 | stack = anew(Nullstab); /* for saving non-local values */ | |
670 | stack->ary_flags = 0; /* not a real array */ | |
6eb13c3b LW |
671 | afill(stack,63); afill(stack,-1); /* preextend stack */ |
672 | afill(savestack,63); afill(savestack,-1); | |
8d063cd8 | 673 | |
a687059c | 674 | /* now parse the script */ |
8d063cd8 | 675 | |
a687059c | 676 | error_count = 0; |
33b78306 LW |
677 | if (yyparse() || error_count) { |
678 | if (minus_c) | |
679 | fatal("%s had compilation errors.\n", origfilename); | |
680 | else { | |
681 | fatal("Execution of %s aborted due to compilation errors.\n", | |
682 | origfilename); | |
683 | } | |
684 | } | |
8d063cd8 | 685 | |
a687059c | 686 | New(50,loop_stack,128,struct loop); |
ae986130 LW |
687 | #ifdef DEBUGGING |
688 | if (debug) { | |
689 | New(51,debname,128,char); | |
690 | New(52,debdelim,128,char); | |
691 | } | |
692 | #endif | |
a687059c | 693 | curstash = defstash; |
378cc40b LW |
694 | |
695 | preprocess = FALSE; | |
8d063cd8 LW |
696 | if (e_fp) { |
697 | e_fp = Nullfp; | |
a687059c LW |
698 | (void)UNLINK(e_tmpname); |
699 | } | |
700 | ||
701 | /* initialize everything that won't change if we undump */ | |
702 | ||
703 | if (sigstab = stabent("SIG",allstabs)) { | |
704 | sigstab->str_pok |= SP_MULTI; | |
705 | (void)hadd(sigstab); | |
706 | } | |
707 | ||
352d5a3a | 708 | magicalize("!#?^~=-%.+&*()<>,\\/[|`':\004\t\020\024\027\006"); |
33b78306 | 709 | userinit(); /* in case linked C routines want magical variables */ |
a687059c LW |
710 | |
711 | amperstab = stabent("&",allstabs); | |
712 | leftstab = stabent("`",allstabs); | |
713 | rightstab = stabent("'",allstabs); | |
714 | sawampersand = (amperstab || leftstab || rightstab); | |
715 | if (tmpstab = stabent(":",allstabs)) | |
716 | str_set(STAB_STR(tmpstab),chopset); | |
20188a90 LW |
717 | if (tmpstab = stabent("\024",allstabs)) |
718 | time(&basetime); | |
a687059c LW |
719 | |
720 | /* these aren't necessarily magical */ | |
721 | if (tmpstab = stabent(";",allstabs)) | |
722 | str_set(STAB_STR(tmpstab),"\034"); | |
33b78306 LW |
723 | if (tmpstab = stabent("]",allstabs)) { |
724 | str = STAB_STR(tmpstab); | |
725 | str_set(str,rcsid); | |
27e2fb84 | 726 | str->str_u.str_nval = atof(patchlevel); |
33b78306 LW |
727 | str->str_nok = 1; |
728 | } | |
a687059c LW |
729 | str_nset(stab_val(stabent("\"", TRUE)), " ", 1); |
730 | ||
731 | stdinstab = stabent("STDIN",TRUE); | |
732 | stdinstab->str_pok |= SP_MULTI; | |
733 | stab_io(stdinstab) = stio_new(); | |
734 | stab_io(stdinstab)->ifp = stdin; | |
735 | tmpstab = stabent("stdin",TRUE); | |
736 | stab_io(tmpstab) = stab_io(stdinstab); | |
737 | tmpstab->str_pok |= SP_MULTI; | |
738 | ||
739 | tmpstab = stabent("STDOUT",TRUE); | |
740 | tmpstab->str_pok |= SP_MULTI; | |
741 | stab_io(tmpstab) = stio_new(); | |
742 | stab_io(tmpstab)->ofp = stab_io(tmpstab)->ifp = stdout; | |
743 | defoutstab = tmpstab; | |
744 | tmpstab = stabent("stdout",TRUE); | |
745 | stab_io(tmpstab) = stab_io(defoutstab); | |
746 | tmpstab->str_pok |= SP_MULTI; | |
747 | ||
748 | curoutstab = stabent("STDERR",TRUE); | |
749 | curoutstab->str_pok |= SP_MULTI; | |
750 | stab_io(curoutstab) = stio_new(); | |
751 | stab_io(curoutstab)->ofp = stab_io(curoutstab)->ifp = stderr; | |
752 | tmpstab = stabent("stderr",TRUE); | |
753 | stab_io(tmpstab) = stab_io(curoutstab); | |
754 | tmpstab->str_pok |= SP_MULTI; | |
755 | curoutstab = defoutstab; /* switch back to STDOUT */ | |
756 | ||
757 | statname = Str_new(66,0); /* last filename we did stat on */ | |
758 | ||
fe14fcc3 LW |
759 | /* now that script is parsed, we can modify record separator */ |
760 | ||
761 | rs = nrs; | |
762 | rslen = nrslen; | |
763 | rschar = nrschar; | |
764 | str_nset(stab_val(stabent("/", TRUE)), rs, rslen); | |
765 | ||
a687059c | 766 | if (do_undump) |
34de22dd | 767 | my_unexec(); |
a687059c LW |
768 | |
769 | just_doit: /* come here if running an undumped a.out */ | |
8d063cd8 LW |
770 | argc--,argv++; /* skip name of script */ |
771 | if (doswitches) { | |
772 | for (; argc > 0 && **argv == '-'; argc--,argv++) { | |
773 | if (argv[0][1] == '-') { | |
774 | argc--,argv++; | |
775 | break; | |
776 | } | |
fe14fcc3 LW |
777 | if (s = index(argv[0], '=')) { |
778 | *s++ = '\0'; | |
779 | str_set(stab_val(stabent(argv[0]+1,TRUE)),s); | |
780 | } | |
781 | else | |
782 | str_numset(stab_val(stabent(argv[0]+1,TRUE)),(double)1.0); | |
8d063cd8 LW |
783 | } |
784 | } | |
a687059c LW |
785 | #ifdef TAINT |
786 | tainted = 1; | |
787 | #endif | |
fe14fcc3 | 788 | if (tmpstab = stabent("0",allstabs)) { |
34de22dd | 789 | str_set(stab_val(tmpstab),origfilename); |
fe14fcc3 LW |
790 | magicname("0", Nullch, 0); |
791 | } | |
352d5a3a | 792 | if (tmpstab = stabent("\030",allstabs)) |
fe14fcc3 | 793 | str_set(stab_val(tmpstab),origargv[0]); |
a559c259 | 794 | if (argvstab = stabent("ARGV",allstabs)) { |
a687059c LW |
795 | argvstab->str_pok |= SP_MULTI; |
796 | (void)aadd(argvstab); | |
33b78306 | 797 | aclear(stab_array(argvstab)); |
8d063cd8 | 798 | for (; argc > 0; argc--,argv++) { |
a687059c | 799 | (void)apush(stab_array(argvstab),str_make(argv[0],0)); |
8d063cd8 LW |
800 | } |
801 | } | |
a687059c LW |
802 | #ifdef TAINT |
803 | (void) stabent("ENV",TRUE); /* must test PATH and IFS */ | |
804 | #endif | |
a559c259 | 805 | if (envstab = stabent("ENV",allstabs)) { |
a687059c LW |
806 | envstab->str_pok |= SP_MULTI; |
807 | (void)hadd(envstab); | |
20188a90 | 808 | hclear(stab_hash(envstab), FALSE); |
33b78306 LW |
809 | if (env != environ) |
810 | environ[0] = Nullch; | |
8d063cd8 LW |
811 | for (; *env; env++) { |
812 | if (!(s = index(*env,'='))) | |
813 | continue; | |
814 | *s++ = '\0'; | |
a687059c LW |
815 | str = str_make(s--,0); |
816 | str_magic(str, envstab, 'E', *env, s - *env); | |
817 | (void)hstore(stab_hash(envstab), *env, s - *env, str, 0); | |
818 | *s = '='; | |
8d063cd8 LW |
819 | } |
820 | } | |
a687059c LW |
821 | #ifdef TAINT |
822 | tainted = 0; | |
823 | #endif | |
378cc40b | 824 | if (tmpstab = stabent("$",allstabs)) |
8d063cd8 LW |
825 | str_numset(STAB_STR(tmpstab),(double)getpid()); |
826 | ||
20188a90 LW |
827 | if (dowarn) { |
828 | stab_check('A','Z'); | |
829 | stab_check('a','z'); | |
830 | } | |
831 | ||
a687059c | 832 | if (setjmp(top_env)) /* sets goto_targ on longjump */ |
ac58e20f | 833 | loop_ptr = -1; /* start label stack again */ |
8d063cd8 LW |
834 | |
835 | #ifdef DEBUGGING | |
836 | if (debug & 1024) | |
a687059c | 837 | dump_all(); |
8d063cd8 LW |
838 | if (debug) |
839 | fprintf(stderr,"\nEXECUTING...\n\n"); | |
840 | #endif | |
841 | ||
33b78306 LW |
842 | if (minus_c) { |
843 | fprintf(stderr,"%s syntax OK\n", origfilename); | |
844 | exit(0); | |
845 | } | |
846 | ||
8d063cd8 LW |
847 | /* do it */ |
848 | ||
a687059c | 849 | (void) cmd_exec(main_root,G_SCALAR,-1); |
8d063cd8 LW |
850 | |
851 | if (goto_targ) | |
378cc40b | 852 | fatal("Can't find label \"%s\"--aborting",goto_targ); |
8d063cd8 | 853 | exit(0); |
378cc40b | 854 | /* NOTREACHED */ |
8d063cd8 LW |
855 | } |
856 | ||
fe14fcc3 | 857 | void |
8d063cd8 LW |
858 | magicalize(list) |
859 | register char *list; | |
860 | { | |
8d063cd8 LW |
861 | char sym[2]; |
862 | ||
863 | sym[1] = '\0'; | |
33b78306 LW |
864 | while (*sym = *list++) |
865 | magicname(sym, Nullch, 0); | |
866 | } | |
867 | ||
fe14fcc3 | 868 | void |
33b78306 LW |
869 | magicname(sym,name,namlen) |
870 | char *sym; | |
871 | char *name; | |
872 | int namlen; | |
873 | { | |
874 | register STAB *stab; | |
875 | ||
876 | if (stab = stabent(sym,allstabs)) { | |
877 | stab_flags(stab) = SF_VMAGIC; | |
878 | str_magic(stab_val(stab), stab, 0, name, namlen); | |
378cc40b | 879 | } |
8d063cd8 LW |
880 | } |
881 | ||
352d5a3a LW |
882 | void |
883 | savelines(array, str) | |
884 | ARRAY *array; | |
885 | STR *str; | |
886 | { | |
887 | register char *s = str->str_ptr; | |
888 | register char *send = str->str_ptr + str->str_cur; | |
889 | register char *t; | |
890 | register int line = 1; | |
891 | ||
892 | while (s && s < send) { | |
893 | STR *tmpstr = Str_new(85,0); | |
894 | ||
895 | t = index(s, '\n'); | |
896 | if (t) | |
897 | t++; | |
898 | else | |
899 | t = send; | |
900 | ||
901 | str_nset(tmpstr, s, t - s); | |
902 | astore(array, line++, tmpstr); | |
903 | s = t; | |
904 | } | |
905 | } | |
906 | ||
fe14fcc3 | 907 | /* this routine is in perl.c by virtue of being sort of an alternate main() */ |
8d063cd8 | 908 | |
a687059c | 909 | int |
45d8adaa | 910 | do_eval(str,optype,stash,savecmd,gimme,arglast) |
a687059c LW |
911 | STR *str; |
912 | int optype; | |
913 | HASH *stash; | |
45d8adaa | 914 | int savecmd; |
a687059c LW |
915 | int gimme; |
916 | int *arglast; | |
8d063cd8 | 917 | { |
a687059c LW |
918 | STR **st = stack->ary_array; |
919 | int retval; | |
fe14fcc3 | 920 | CMD *myroot = Nullcmd; |
a687059c LW |
921 | ARRAY *ar; |
922 | int i; | |
33b78306 | 923 | CMD * VOLATILE oldcurcmd = curcmd; |
ac58e20f LW |
924 | VOLATILE int oldtmps_base = tmps_base; |
925 | VOLATILE int oldsave = savestack->ary_fill; | |
20188a90 | 926 | VOLATILE int oldperldb = perldb; |
ac58e20f | 927 | SPAT * VOLATILE oldspat = curspat; |
fe14fcc3 | 928 | SPAT * VOLATILE oldlspat = lastspat; |
a687059c | 929 | static char *last_eval = Nullch; |
45d8adaa | 930 | static long last_elen = 0; |
a687059c | 931 | static CMD *last_root = Nullcmd; |
663a0e37 | 932 | VOLATILE int sp = arglast[0]; |
33b78306 | 933 | char *specfilename; |
20188a90 | 934 | char *tmpfilename; |
fe14fcc3 | 935 | int parsing = 1; |
8d063cd8 | 936 | |
a687059c LW |
937 | tmps_base = tmps_max; |
938 | if (curstash != stash) { | |
939 | (void)savehptr(&curstash); | |
940 | curstash = stash; | |
8d063cd8 | 941 | } |
a687059c | 942 | str_set(stab_val(stabent("@",TRUE)),""); |
20188a90 LW |
943 | if (curcmd->c_line == 0) /* don't debug debugger... */ |
944 | perldb = FALSE; | |
33b78306 LW |
945 | curcmd = &compiling; |
946 | if (optype == O_EVAL) { /* normal eval */ | |
20188a90 | 947 | curcmd->c_filestab = fstab("(eval)"); |
33b78306 | 948 | curcmd->c_line = 1; |
a687059c | 949 | str_sset(linestr,str); |
352d5a3a LW |
950 | str_cat(linestr,";\n"); /* be kind to them */ |
951 | if (perldb) | |
952 | savelines(stab_xarray(curcmd->c_filestab), linestr); | |
8d063cd8 | 953 | } |
a687059c | 954 | else { |
0f85fab0 | 955 | if (last_root && !in_eval) { |
a687059c | 956 | Safefree(last_eval); |
fe14fcc3 | 957 | last_eval = Nullch; |
a687059c LW |
958 | cmd_free(last_root); |
959 | last_root = Nullcmd; | |
8d063cd8 | 960 | } |
33b78306 | 961 | specfilename = str_get(str); |
a687059c | 962 | str_set(linestr,""); |
20188a90 | 963 | if (optype == O_REQUIRE && &str_undef != |
33b78306 | 964 | hfetch(stab_hash(incstab), specfilename, strlen(specfilename), 0)) { |
20188a90 | 965 | curcmd = oldcurcmd; |
33b78306 LW |
966 | tmps_base = oldtmps_base; |
967 | st[++sp] = &str_yes; | |
20188a90 | 968 | perldb = oldperldb; |
33b78306 LW |
969 | return sp; |
970 | } | |
20188a90 LW |
971 | tmpfilename = savestr(specfilename); |
972 | if (index("/.", *tmpfilename)) | |
973 | rsfp = fopen(tmpfilename,"r"); | |
33b78306 LW |
974 | else { |
975 | ar = stab_array(incstab); | |
a687059c | 976 | for (i = 0; i <= ar->ary_fill; i++) { |
20188a90 LW |
977 | (void)sprintf(buf, "%s/%s", |
978 | str_get(afetch(ar,i,TRUE)), specfilename); | |
a687059c LW |
979 | rsfp = fopen(buf,"r"); |
980 | if (rsfp) { | |
33b78306 LW |
981 | char *s = buf; |
982 | ||
983 | if (*s == '.' && s[1] == '/') | |
984 | s += 2; | |
20188a90 LW |
985 | Safefree(tmpfilename); |
986 | tmpfilename = savestr(s); | |
8d063cd8 LW |
987 | break; |
988 | } | |
378cc40b LW |
989 | } |
990 | } | |
20188a90 LW |
991 | curcmd->c_filestab = fstab(tmpfilename); |
992 | Safefree(tmpfilename); | |
fe14fcc3 | 993 | tmpfilename = Nullch; |
a687059c | 994 | if (!rsfp) { |
20188a90 | 995 | curcmd = oldcurcmd; |
a687059c | 996 | tmps_base = oldtmps_base; |
33b78306 LW |
997 | if (optype == O_REQUIRE) { |
998 | sprintf(tokenbuf,"Can't locate %s in @INC", specfilename); | |
999 | if (instr(tokenbuf,".h ")) | |
1000 | strcat(tokenbuf," (change .h to .ph maybe?)"); | |
1001 | if (instr(tokenbuf,".ph ")) | |
6eb13c3b | 1002 | strcat(tokenbuf," (did you run h2ph?)"); |
33b78306 LW |
1003 | fatal("%s",tokenbuf); |
1004 | } | |
a687059c LW |
1005 | if (gimme != G_ARRAY) |
1006 | st[++sp] = &str_undef; | |
20188a90 | 1007 | perldb = oldperldb; |
a687059c | 1008 | return sp; |
8d063cd8 | 1009 | } |
33b78306 | 1010 | curcmd->c_line = 0; |
8d063cd8 | 1011 | } |
a687059c LW |
1012 | in_eval++; |
1013 | oldoldbufptr = oldbufptr = bufptr = str_get(linestr); | |
1014 | bufend = bufptr + linestr->str_cur; | |
ac58e20f LW |
1015 | if (++loop_ptr >= loop_max) { |
1016 | loop_max += 128; | |
1017 | Renew(loop_stack, loop_max, struct loop); | |
1018 | } | |
1019 | loop_stack[loop_ptr].loop_label = "_EVAL_"; | |
1020 | loop_stack[loop_ptr].loop_sp = sp; | |
1021 | #ifdef DEBUGGING | |
1022 | if (debug & 4) { | |
1023 | deb("(Pushing label #%d _EVAL_)\n", loop_ptr); | |
1024 | } | |
1025 | #endif | |
fe14fcc3 | 1026 | eval_root = Nullcmd; |
ac58e20f | 1027 | if (setjmp(loop_stack[loop_ptr].loop_env)) { |
a687059c | 1028 | retval = 1; |
8d063cd8 | 1029 | } |
a687059c LW |
1030 | else { |
1031 | error_count = 0; | |
20188a90 | 1032 | if (rsfp) { |
a687059c | 1033 | retval = yyparse(); |
20188a90 LW |
1034 | retval |= error_count; |
1035 | } | |
45d8adaa | 1036 | else if (last_root && last_elen == bufend - bufptr |
988174c1 | 1037 | && *bufptr == *last_eval && !bcmp(bufptr,last_eval,last_elen)){ |
a687059c LW |
1038 | retval = 0; |
1039 | eval_root = last_root; /* no point in reparsing */ | |
1040 | } | |
45d8adaa | 1041 | else if (in_eval == 1 && !savecmd) { |
a687059c LW |
1042 | if (last_root) { |
1043 | Safefree(last_eval); | |
fe14fcc3 | 1044 | last_eval = Nullch; |
a687059c | 1045 | cmd_free(last_root); |
8d063cd8 | 1046 | } |
a687059c | 1047 | last_root = Nullcmd; |
45d8adaa LW |
1048 | last_elen = bufend - bufptr; |
1049 | last_eval = nsavestr(bufptr, last_elen); | |
a687059c | 1050 | retval = yyparse(); |
20188a90 | 1051 | retval |= error_count; |
a687059c LW |
1052 | if (!retval) |
1053 | last_root = eval_root; | |
fe14fcc3 LW |
1054 | if (!last_root) { |
1055 | Safefree(last_eval); | |
1056 | last_eval = Nullch; | |
1057 | } | |
8d063cd8 | 1058 | } |
a687059c LW |
1059 | else |
1060 | retval = yyparse(); | |
8d063cd8 | 1061 | } |
a687059c | 1062 | myroot = eval_root; /* in case cmd_exec does another eval! */ |
20188a90 LW |
1063 | |
1064 | if (retval) { | |
ac58e20f LW |
1065 | st = stack->ary_array; |
1066 | sp = arglast[0]; | |
1067 | if (gimme != G_ARRAY) | |
1068 | st[++sp] = &str_undef; | |
fe14fcc3 LW |
1069 | if (parsing) { |
1070 | #ifndef MANGLEDPARSE | |
1071 | #ifdef DEBUGGING | |
1072 | if (debug & 128) | |
1073 | fprintf(stderr,"Freeing eval_root %lx\n",(long)eval_root); | |
1074 | #endif | |
1075 | cmd_free(eval_root); | |
1076 | #endif | |
45d8adaa | 1077 | if ((CMD*)eval_root == last_root) |
fe14fcc3 LW |
1078 | last_root = Nullcmd; |
1079 | eval_root = myroot = Nullcmd; | |
1080 | } | |
a687059c LW |
1081 | if (rsfp) { |
1082 | fclose(rsfp); | |
1083 | rsfp = 0; | |
1084 | } | |
8d063cd8 | 1085 | } |
8d063cd8 | 1086 | else { |
fe14fcc3 | 1087 | parsing = 0; |
a687059c LW |
1088 | sp = cmd_exec(eval_root,gimme,sp); |
1089 | st = stack->ary_array; | |
1090 | for (i = arglast[0] + 1; i <= sp; i++) | |
fe14fcc3 | 1091 | st[i] = str_mortal(st[i]); |
a687059c | 1092 | /* if we don't save result, free zaps it */ |
45d8adaa LW |
1093 | if (savecmd) |
1094 | eval_root = myroot; | |
1095 | else if (in_eval != 1 && myroot != last_root) | |
a687059c | 1096 | cmd_free(myroot); |
a559c259 | 1097 | } |
20188a90 LW |
1098 | |
1099 | perldb = oldperldb; | |
a559c259 | 1100 | in_eval--; |
ac58e20f | 1101 | #ifdef DEBUGGING |
20188a90 LW |
1102 | if (debug & 4) { |
1103 | char *tmps = loop_stack[loop_ptr].loop_label; | |
1104 | deb("(Popping label #%d %s)\n",loop_ptr, | |
1105 | tmps ? tmps : "" ); | |
1106 | } | |
ac58e20f LW |
1107 | #endif |
1108 | loop_ptr--; | |
378cc40b | 1109 | tmps_base = oldtmps_base; |
a687059c | 1110 | curspat = oldspat; |
fe14fcc3 | 1111 | lastspat = oldlspat; |
378cc40b LW |
1112 | if (savestack->ary_fill > oldsave) /* let them use local() */ |
1113 | restorelist(oldsave); | |
20188a90 LW |
1114 | |
1115 | if (optype != O_EVAL) { | |
1116 | if (retval) { | |
1117 | if (optype == O_REQUIRE) | |
1118 | fatal("%s", str_get(stab_val(stabent("@",TRUE)))); | |
1119 | } | |
1120 | else { | |
1121 | curcmd = oldcurcmd; | |
1122 | if (gimme == G_SCALAR ? str_true(st[sp]) : sp > arglast[0]) { | |
1123 | (void)hstore(stab_hash(incstab), specfilename, | |
1124 | strlen(specfilename), str_smake(stab_val(curcmd->c_filestab)), | |
1125 | 0 ); | |
1126 | } | |
1127 | else if (optype == O_REQUIRE) | |
1128 | fatal("%s did not return a true value", specfilename); | |
1129 | } | |
1130 | } | |
1131 | curcmd = oldcurcmd; | |
a687059c | 1132 | return sp; |
378cc40b | 1133 | } |
33b78306 | 1134 | |
45d8adaa LW |
1135 | int |
1136 | do_try(cmd,gimme,arglast) | |
1137 | CMD *cmd; | |
1138 | int gimme; | |
1139 | int *arglast; | |
1140 | { | |
1141 | STR **st = stack->ary_array; | |
1142 | ||
1143 | CMD * VOLATILE oldcurcmd = curcmd; | |
1144 | VOLATILE int oldtmps_base = tmps_base; | |
1145 | VOLATILE int oldsave = savestack->ary_fill; | |
1146 | SPAT * VOLATILE oldspat = curspat; | |
1147 | SPAT * VOLATILE oldlspat = lastspat; | |
1148 | VOLATILE int sp = arglast[0]; | |
1149 | ||
1150 | tmps_base = tmps_max; | |
1151 | str_set(stab_val(stabent("@",TRUE)),""); | |
1152 | in_eval++; | |
1153 | if (++loop_ptr >= loop_max) { | |
1154 | loop_max += 128; | |
1155 | Renew(loop_stack, loop_max, struct loop); | |
1156 | } | |
1157 | loop_stack[loop_ptr].loop_label = "_EVAL_"; | |
1158 | loop_stack[loop_ptr].loop_sp = sp; | |
1159 | #ifdef DEBUGGING | |
1160 | if (debug & 4) { | |
1161 | deb("(Pushing label #%d _EVAL_)\n", loop_ptr); | |
1162 | } | |
1163 | #endif | |
1164 | if (setjmp(loop_stack[loop_ptr].loop_env)) { | |
1165 | st = stack->ary_array; | |
1166 | sp = arglast[0]; | |
1167 | if (gimme != G_ARRAY) | |
1168 | st[++sp] = &str_undef; | |
1169 | } | |
1170 | else { | |
1171 | sp = cmd_exec(cmd,gimme,sp); | |
1172 | st = stack->ary_array; | |
1173 | /* for (i = arglast[0] + 1; i <= sp; i++) | |
1174 | st[i] = str_mortal(st[i]); not needed, I think */ | |
1175 | /* if we don't save result, free zaps it */ | |
1176 | } | |
1177 | ||
1178 | in_eval--; | |
1179 | #ifdef DEBUGGING | |
1180 | if (debug & 4) { | |
1181 | char *tmps = loop_stack[loop_ptr].loop_label; | |
1182 | deb("(Popping label #%d %s)\n",loop_ptr, | |
1183 | tmps ? tmps : "" ); | |
1184 | } | |
1185 | #endif | |
1186 | loop_ptr--; | |
1187 | tmps_base = oldtmps_base; | |
1188 | curspat = oldspat; | |
1189 | lastspat = oldlspat; | |
1190 | curcmd = oldcurcmd; | |
1191 | if (savestack->ary_fill > oldsave) /* let them use local() */ | |
1192 | restorelist(oldsave); | |
1193 | ||
1194 | return sp; | |
1195 | } | |
1196 | ||
33b78306 LW |
1197 | /* This routine handles any switches that can be given during run */ |
1198 | ||
1199 | static char * | |
1200 | moreswitches(s) | |
1201 | char *s; | |
1202 | { | |
fe14fcc3 LW |
1203 | int numlen; |
1204 | ||
33b78306 | 1205 | switch (*s) { |
27e2fb84 | 1206 | case '0': |
fe14fcc3 LW |
1207 | nrschar = scanoct(s, 4, &numlen); |
1208 | nrs = nsavestr("\n",1); | |
1209 | *nrs = nrschar; | |
1210 | if (nrschar > 0377) { | |
1211 | nrslen = 0; | |
1212 | nrs = ""; | |
27e2fb84 | 1213 | } |
fe14fcc3 LW |
1214 | else if (!nrschar && numlen >= 2) { |
1215 | nrslen = 2; | |
1216 | nrs = "\n\n"; | |
1217 | nrschar = '\n'; | |
1218 | } | |
1219 | return s + numlen; | |
33b78306 LW |
1220 | case 'a': |
1221 | minus_a = TRUE; | |
1222 | s++; | |
1223 | return s; | |
1224 | case 'c': | |
1225 | minus_c = TRUE; | |
1226 | s++; | |
1227 | return s; | |
1228 | case 'd': | |
1229 | #ifdef TAINT | |
1230 | if (euid != uid || egid != gid) | |
1231 | fatal("No -d allowed in setuid scripts"); | |
1232 | #endif | |
1233 | perldb = TRUE; | |
1234 | s++; | |
1235 | return s; | |
1236 | case 'D': | |
1237 | #ifdef DEBUGGING | |
1238 | #ifdef TAINT | |
1239 | if (euid != uid || egid != gid) | |
1240 | fatal("No -D allowed in setuid scripts"); | |
1241 | #endif | |
fe14fcc3 | 1242 | debug = atoi(s+1) | 32768; |
33b78306 LW |
1243 | #else |
1244 | warn("Recompile perl with -DDEBUGGING to use -D switch\n"); | |
1245 | #endif | |
45d8adaa LW |
1246 | /*SUPPRESS 530*/ |
1247 | for (s++; isDIGIT(*s); s++) ; | |
fe14fcc3 | 1248 | return s; |
33b78306 LW |
1249 | case 'i': |
1250 | inplace = savestr(s+1); | |
45d8adaa LW |
1251 | /*SUPPRESS 530*/ |
1252 | for (s = inplace; *s && !isSPACE(*s); s++) ; | |
33b78306 | 1253 | *s = '\0'; |
33b78306 LW |
1254 | break; |
1255 | case 'I': | |
1256 | #ifdef TAINT | |
1257 | if (euid != uid || egid != gid) | |
1258 | fatal("No -I allowed in setuid scripts"); | |
1259 | #endif | |
1260 | if (*++s) { | |
1261 | (void)apush(stab_array(incstab),str_make(s,0)); | |
1262 | } | |
1263 | else | |
1264 | fatal("No space allowed after -I"); | |
1265 | break; | |
fe14fcc3 LW |
1266 | case 'l': |
1267 | minus_l = TRUE; | |
1268 | s++; | |
45d8adaa | 1269 | if (isDIGIT(*s)) { |
fe14fcc3 LW |
1270 | ors = savestr("\n"); |
1271 | orslen = 1; | |
1272 | *ors = scanoct(s, 3 + (*s == '0'), &numlen); | |
1273 | s += numlen; | |
1274 | } | |
1275 | else { | |
1276 | ors = nsavestr(nrs,nrslen); | |
1277 | orslen = nrslen; | |
1278 | } | |
1279 | return s; | |
33b78306 LW |
1280 | case 'n': |
1281 | minus_n = TRUE; | |
1282 | s++; | |
1283 | return s; | |
1284 | case 'p': | |
1285 | minus_p = TRUE; | |
1286 | s++; | |
1287 | return s; | |
1288 | case 'u': | |
1289 | do_undump = TRUE; | |
1290 | s++; | |
1291 | return s; | |
1292 | case 'U': | |
1293 | unsafe = TRUE; | |
1294 | s++; | |
1295 | return s; | |
1296 | case 'v': | |
fe14fcc3 | 1297 | fputs("\nThis is perl, version 4.0\n\n",stdout); |
33b78306 | 1298 | fputs(rcsid,stdout); |
fe14fcc3 | 1299 | fputs("\nCopyright (c) 1989, 1990, 1991, Larry Wall\n",stdout); |
33b78306 LW |
1300 | #ifdef MSDOS |
1301 | fputs("MS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n", | |
1302 | stdout); | |
20188a90 LW |
1303 | #ifdef OS2 |
1304 | fputs("OS/2 port Copyright (c) 1990, Raymond Chen, Kai Uwe Rommel\n", | |
1305 | stdout); | |
1306 | #endif | |
33b78306 LW |
1307 | #endif |
1308 | fputs("\n\ | |
1462b684 LW |
1309 | Perl may be copied only under the terms of either the Artistic License or the\n\ |
1310 | GNU General Public License, which may be found in the Perl 4.0 source kit.\n",stdout); | |
20188a90 LW |
1311 | #ifdef MSDOS |
1312 | usage(origargv[0]); | |
1313 | #endif | |
33b78306 LW |
1314 | exit(0); |
1315 | case 'w': | |
1316 | dowarn = TRUE; | |
1317 | s++; | |
1318 | return s; | |
1319 | case ' ': | |
1320 | case '\n': | |
1321 | case '\t': | |
1322 | break; | |
1323 | default: | |
1324 | fatal("Switch meaningless after -x: -%s",s); | |
1325 | } | |
1326 | return Nullch; | |
1327 | } | |
34de22dd LW |
1328 | |
1329 | /* compliments of Tom Christiansen */ | |
1330 | ||
1331 | /* unexec() can be found in the Gnu emacs distribution */ | |
1332 | ||
1333 | my_unexec() | |
1334 | { | |
1335 | #ifdef UNEXEC | |
1336 | int status; | |
1337 | extern int etext; | |
1338 | static char dumpname[BUFSIZ]; | |
1339 | static char perlpath[256]; | |
1340 | ||
1341 | sprintf (dumpname, "%s.perldump", origfilename); | |
1342 | sprintf (perlpath, "%s/perl", BIN); | |
1343 | ||
1344 | status = unexec(dumpname, perlpath, &etext, sbrk(0), 0); | |
1345 | if (status) | |
1346 | fprintf(stderr, "unexec of %s into %s failed!\n", perlpath, dumpname); | |
1347 | exit(status); | |
1348 | #else | |
352d5a3a LW |
1349 | #ifdef MSDOS |
1350 | abort(); /* nothing else to do */ | |
1351 | #else /* ! MSDOS */ | |
fe14fcc3 LW |
1352 | # ifndef SIGABRT |
1353 | # define SIGABRT SIGILL | |
1354 | # endif | |
1355 | # ifndef SIGILL | |
1356 | # define SIGILL 6 /* blech */ | |
1357 | # endif | |
1358 | kill(getpid(),SIGABRT); /* for use with undump */ | |
352d5a3a | 1359 | #endif /* ! MSDOS */ |
34de22dd LW |
1360 | #endif |
1361 | } | |
1362 |